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The CLUES Project: Predicting the Effects of Land-use on Water Quality – Stage II

Ross Woods (NIWA, Project Leader)
Vince Bidwell (Lincoln Ventures)
Brent Clothier, Steve Green (HortResearch)
Sandy Elliott, Ude Shankar (NIWA)
Simon Harris (Harris Consulting)
Allan Hewitt, Robert Gibb, Roger Parfitt (Landcare Research)
David Wheeler (AgResearch)

Prepared for
Ministry of Agriculture and Forestry

NIWA Client Report: HAM2006-096
July 2006
NIWA Project: MAF05502
National Institute of Water & Atmospheric Research Ltd
10 Kyle Street, Riccarton, Christchurch
P O Box 8602, Christchurch, New Zealand
Phone +64-3-348 8987, Fax +64-3-348 5548
www.niwa.co.nz

Contents

• Executive Summary
• 1. Project Objectives
• 2. Project Plan
• 3. Workshop 2: August 2004
  • 3.1. Proposed ideas from Workshop
• 4. Workshop 3: July 2005
• 5. Stage II Tasks
• 6. Objective 1: CLUES Catchment Modelling Framework (NIWA)
  • 6.1. Land use change scenario tool
  • 6.2. Overlay new land use scenarios on catchment boundary
  • 6.3. Integration of SPARROW, OVERSEER^® and HC (Harris Consulting) models
  • 6.4. Integration of SPARROW phosphorus model
  • 6.5. Proposed next steps
• 7. Objective 2: Catchment-scale Water Quality – SPARROW
  • 7.1. SPARROW for surface water
    • 7.1.1. Recalibrate the national SPARROW N model
    • 7.1.2. Pilot testing at Environment Waikato
    • 7.1.3. Develop a National SPARROW model for phosphorus
  • 7.2. SPARROW groundwater extension
    • 7.2.1. Review of SPARROW groundwater extension
    • 7.2.2. The role of landscape in groundwater catchments
    • 7.2.3. Water-balance approach to estimation of exchange coefficients
    • 7.2.4. Summary
  • 7.3. Data sources for SPARROW component of CLUES
  • 7.4. Proposed next steps
• 8. Objective 3: Triple bottom line effects of land-use change (Harris Consulting)
  • 8.1. Sheep, beef, dairy and deer models
  • 8.2. Arable model
  • 8.3. Horticulture model
  • 8.4. Format of predictive relationships
    • 8.4.1. Output
    • 8.4.2. Cash farm surplus (CFS)
    • 8.4.3. N leached
    • 8.4.4. Total GDP relationship
    • 8.4.5. Total employment
  • 8.5. Data Sources for Triple-Bottom-Line Component of CLUES
  • 8.6. Proposed next steps
  • 8.7. Sources
• 9. Objective 4a: Enterprise-scale modelling (AgResearch)
  • 9.1. OVERSEER^® scenario development
  • 9.2. Calling the OVERSEER^® DLL
  • 9.3. Operation of OVERSEER^® DLL
  • 9.4. Data sources for OVERSEER^® component of CLUES
  • 9.5. Additional work
  • 9.6. Proposed next steps
  • 9.7. References
• 10. Objective 4b: Enterprise-scale modelling (HortResearch)
  • 10.1. Calculation procedure
  • 10.2. Limitation of the SPASMO calculation
  • 10.3. Results
  • 10.4. Incorporating results into CLUES
  • 10.5. Data sources for SPASMO component of CLUES
  • 10.6. Proposed next steps
• 11. Objective 5: Mapping of pollution risk, land use and soils (Landcare Research)
  • 11.1. Land use mapping
  • 11.2. Soil data input to CLUES models
  • 11.3. Establish and maintain FTP site
  • 11.4. Introduction to EnSus
  • 11.5. Loss of soluble N from soils by leaching and run off
  • 11.6. EnSus
  • 11.7. Vulnerability to leaching
    • 11.7.1. Potential soil leaching index
    • 11.7.2. Attenuation of N via pathway to water bodies
    • 11.7.3. Vulnerability classes
  • 11.8. Pressure
  • 11.9. Risk of Nitrate leaching and runoff
  • 11.10. Results for Nitrate leaching
  • 11.11. Data sources for EnSus component of CLUES
  • 11.12. Proposed next steps
• 12. Workshop 3: July 2005
• 13. Summary
• 14. References
• 15. Appendix 1: Contract Objectives for Stage II
  • 15.1. Objective 1
  • 15.2. Objective 2
  • 15.3. Objective 3
  • 15.4. Objective 4
  • 15.5. Objective 5
• 16. Appendix 2: Land use classification and map
  • 16.1. Data sources for land use classification in CLUES
  • 16.2. Contributing database overview
    • 16.2.1. MAF monitor farm types
    • 16.2.2. AgriBase
    • 16.2.3. Land cover database v2 (LCDB2)
    • 16.2.4. Land environments of NZ (LENZ)
    • 16.2.5. Stock units and relative stock carrying capacities
  • 16.3. Applying the classification
  • 16.4. Next steps
    • 16.4.1. AgriBase / LCDB2 confusion matrices
    • 16.4.2. Testing/validating the LENZ landform to sheep & beef monitor farm type relationship
    • 16.4.3. Refining the spatial allocation of the regional MAF Monitor Farm models
• 17. Appendix 3: Details of Workshop 2: August 2004
  • 17.1. CLUES: Spatial framework that provides the project ‘glue’ - Ude Shankar
  • 17.2. SPARROW model for N - Sandy Elliott
  • 17.3. Extending SPARROW model for groundwater - Vince Bidwell
  • 17.4. Triple-bottom-line effects of land-use change - Simon Harris
  • 17.5. EnSus mapping of N leaching risk - Allan Hewitt
  • 17.6. OVERSEER^® model of pastoral land use impacts on water quality – David Wheeler
  • 17.7. SPASMO model of horticultural land use impacts on water quality - Brent Clothier
  • 17.8. Comments by Gerald Rys
  • 17.9. Cooperative NZ research on soils - Brent Clothier and Liz Wedderburn
  • 17.10. A name for the project
• 18. Appendix 3: Details of Workshop 3: July 2005
  • 18.1. Agenda
  • 18.2. Issues that arose during CLUES project workshop, 27 July, Hamilton
  • 18.3. Comments from Gerald Rys
• 19. Appendix 3: Contact details

• PDF Download [4.8M PDF]

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